INVT CHF100A-004G-2, Operation Manual

Page: 92 / 156

CHF100A series high performance universal inverter
.91.
Figure 6.32 Over-voltage stall function.
Function
Code
Name Description
Setting
Range
Factory
Setting
PB.08
Auto current
limiting
threshold
50~200% 50~200
G Model:
160%
P Model:
120%
PB.09
Frequency
decrease rate
when current
limiting
0.00~100.00Hz/s 0.00~100.00 10.00Hz/s
PB.10
Auto current
limiting
selection
0: Enabled
1: Disabled when constant
speed
0~1 0
Auto current limiting is used to limit the current of inverter smaller than the value
determined by PB.08 in real time. Therefore the inverter will not trip due to surge
over-current. This function is especially useful for the applications with big load inertia or
step change of load.
PB.08 is a percentage of the inverter
’
s rated current.
PB.09 defines the decrease rate of output frequency when this function is active. If
PB.08 is too small, overload fault may occur. If it is too big, the frequency will change too
sharply and therefore, the feedback energy of motor will be too large and may cause
over-voltage fault. This function is always enabled during acceleration or deceleration.
Whether the function is enabled in constant
Speed running is determined by PB.10.
Notice:
l
During auto current limiting process, the inverter
’
s output frequency may